Properties of the Number 26911

Twenty-Six Thousand Nine Hundred Eleven

Basics

Value: 26910 → 26911 → 26912

Parity: odd

Prime: No

Previous Prime: 26903

Next Prime: 26921

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 17 × 1583

Divisors: 1, 17, 1583, 26911

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110100100011111

Octal: 64437

Duodecimal: 136A7

Hexadecimal: 691f

Square: 724201921

Square Root: 164.04572533290832

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

T(n,k)=Number of 0..k arrays of length n with each element differing from at least one neighbor by something other than 1. A221573

a(n) = 32·n² - 1. A158563

a(n) = 841·n - 1. A158402

a(n) = n³ - 3n² + 3. A177058

Number of 0..4 arrays of length n with each element differing from at least one neighbor by something other than 1. A221569

Number of 0..n arrays of length 7 with each element differing from at least one neighbor by something other than 1. A221577

a(n) = ∑_{i=1..n, j=1..n, gcd(i,j)=1} i. A333297

sech(sin(tan(x)))=1-1/2!*x²+1/4!*x⁴+47/6!*x⁶+897/8!*x⁸... A12018

a(n) = A026907(2·n, n-2). A26911